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Compact rectangular electronic lube oil control unit with thermoplastic housing, visible sensor and wire harness

Johnson Controls Inc

Johnson Controls P545NCB-25C Electronic Lube Oil Control 15 PSI

SKU CH-B8V5-45MW4

Electronic lube-oil pressure control with 15 psi setting, 120-second delay and alarm circuit

  • Product typeElectronic
  • Electronic pressure monitoring protects compressor lubrication systems
  • Adjustable 1.5 to 10 psid differential range suits varied applications
  • Built-in 120-second delay prevents nuisance shutdowns during start-up
  • Integrated alarm circuit provides immediate fault notification
  • 48-inch capillary tube allows flexible sensor placement

Electronic lube oil control for compressors

The Johnson Controls P545NCB-25C is an electronic lube oil pressure control designed for compressor applications. It operates on 120V AC or 240V AC input voltage and features a 120-second time delay. The unit includes an integrated alarm circuit, a sensor, and a wire harness for simplified installation.

Suited for Blitzer compressor protection

This control suits technicians maintaining Blitzer compressors that require electronic pressure monitoring with alarm functionality. It is not intended for systems needing mechanical controls or for compressors from other brands without verified compatibility. Buyers who need adjustable settings outside the factory ranges should consider alternative solutions.

Pressure range and capillary reach

The control handles a maximum pressure setting of 10 psi and a differential pressure range from 1.5 psid to 10 psid. A 48-inch capillary tube provides flexibility for sensor placement within the compressor housing. The fixed 120-second delay and set pressure limits define the operational boundaries for this specific model.

How it compares

Measured against everything we stock in General Hardware & Accessories, at today’s prices. Recalculated every night.

Price $240.99
Pricier than about 91% of the 2,607 comparable items (median $18.99).

Specifications

Product
Brand nameJohnson Controls
Product typeElectronic

Questions about this item

What power supply voltage must be available for the P545NCB-25C to operate?

The control accepts either 120V AC or 240V AC input, so the installation must provide one of those two voltages.

Will the existing 48-inch capillary tube on my compressor reach the new control without modification?

The unit ships with a 48 in capillary tube; if your current tube matches that length it will connect directly.

How can I verify the 120-second time delay is functioning after wiring the alarm circuit?

After power-up, trigger a low-pressure condition; the alarm should remain inactive for 120 sec before signalling.

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